If x is a factor of y and y is a factor z, then x is a factor of z. true or false

True; this would indeed be a factor of .

Step-by-step explanation:

" is a factor of " means that there is a whole number such that .

Likewise, is a factor of if and only if there is a whole number such that .

This would be a factor of if there is some whole number such that .

The first equality implies that may be substituted with .

Substitute the in the second equality with to obtain:

.

Rearrange to obtain:

.

The product of two whole numbers is still a whole number. Since and are both whole numbers, would also be a whole number.

Thus, if , then , while would be a whole number.

Therefore, this would indeed be a factor of .

answer:   y=2x-3

step-by-step explanation: